Analogous structures are the result of

Options

A. Adaptive radiation
B. Parallel evolution
C. Convergent evolution
D. Both (2) and (3)

Answer

To determine the answer to the question about analogous structures, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definition of Analogous Structures**:
- Analogous structures are organs that have similar functions but different evolutionary origins. This means that while they perform the same function, they do not share a common ancestor.

2. **Identify the Key Characteristics**:
- The key characteristics of analogous structures are:
- Different ancestry
- Similar functions

3. **Examine the Options Provided**:
- The options likely include terms such as adaptive radiation, parallel evolution, and convergent evolution. We need to analyze these terms in relation to analogous structures.

4. **Analyze Each Option**:
- **Adaptive Radiation**: This occurs when different species evolve from a common ancestor, leading to different structures and functions. This does not describe analogous structures.
- **Parallel Evolution**: This refers to different species evolving similarly due to similar environmental pressures, resulting in similar traits. However, this is not the same as analogous structures since it involves common ancestry.
- **Convergent Evolution**: This is the process where organisms from different evolutionary backgrounds develop similar traits or functions due to similar environmental pressures. This is the correct description of analogous structures.

5. **Select the Correct Answer**:
- Based on the analysis, the correct answer is **Convergent Evolution**, as it leads to the development of analogous structures.

### Final Answer:
Analogous structures are the result of **Convergent Evolution**.